Keyword Index

! in constraint, see Section 6.38.2 Multiple Alternative Constraints

# in constraint, see Section 6.38.3 Constraint Modifier Characters

#pragma, see Section 6.48 Pragmas Accepted by GCC

#pragma implementation, see Section 7.5 Declarations and Definitions in One Header

#pragma implementation, implied, see Section 7.5 Declarations and Definitions in One Header

#pragma interface, see Section 7.5 Declarations and Definitions in One Header

#pragma, reason for not using, see Section 6.26 Declaring Attributes of Functions

$, see Section 6.30 Dollar Signs in Identifier Names

in constraint, see Section 6.38.3 Constraint Modifier Characters

45nclude, see Section 4.15 Specifying subprocesses and the switches to pass to them

45nclude_noerr, see Section 4.15 Specifying subprocesses and the switches to pass to them

rename, see Section 4.15 Specifying subprocesses and the switches to pass to them

& in constraint, see Section 6.38.3 Constraint Modifier Characters

', see Section 11.5 Incompatibilities of GCC

* in constraint, see Section 6.38.3 Constraint Modifier Characters

+ in constraint, see Section 6.38.3 Constraint Modifier Characters

-lgcc, use with -nodefaultlibs, see Section 4.13 Options for Linking

-lgcc, use with -nostdlib, see Section 4.13 Options for Linking

-nodefaultlibs and unresolved references, see Section 4.13 Options for Linking

-nostdlib and unresolved references, see Section 4.13 Options for Linking

.sdata/.sdata2 references (PowerPC), see Section 4.17.2 IBM RS/6000 and PowerPC Options

//, see Section 6.29 C++ Style Comments

0 in constraint, see Section 6.38.1 Simple Constraints

< in constraint, see Section 6.38.1 Simple Constraints

<?, see Section 7.1 Minimum and Maximum Operators in C++

= in constraint, see Section 6.38.3 Constraint Modifier Characters

> in constraint, see Section 6.38.1 Simple Constraints

>?, see Section 7.1 Minimum and Maximum Operators in C++

? in constraint, see Section 6.38.2 Multiple Alternative Constraints

?: extensions, see Section 6.8 Conditionals with Omitted Operands

?: extensions, see Section 6.7 Generalized Lvalues

?: side effect, see Section 6.8 Conditionals with Omitted Operands

_ in variables in macros, see Section 6.6 Referring to a Type with typeof

__builtin_apply, see Section 6.5 Constructing Function Calls

__builtin_apply_args, see Section 6.5 Constructing Function Calls

__builtin_choose_expr, see Section 6.46 Other built-in functions provided by GCC

__builtin_clz, see Section 6.46 Other built-in functions provided by GCC

__builtin_clzl, see Section 6.46 Other built-in functions provided by GCC

__builtin_clzll, see Section 6.46 Other built-in functions provided by GCC

__builtin_constant_p, see Section 6.46 Other built-in functions provided by GCC

__builtin_ctz, see Section 6.46 Other built-in functions provided by GCC

__builtin_ctzl, see Section 6.46 Other built-in functions provided by GCC

__builtin_ctzll, see Section 6.46 Other built-in functions provided by GCC

__builtin_expect, see Section 6.46 Other built-in functions provided by GCC

__builtin_ffs, see Section 6.46 Other built-in functions provided by GCC

__builtin_ffsl, see Section 6.46 Other built-in functions provided by GCC

__builtin_ffsll, see Section 6.46 Other built-in functions provided by GCC

__builtin_frame_address, see Section 6.44 Getting the Return or Frame Address of a Function

__builtin_huge_val, see Section 6.46 Other built-in functions provided by GCC

__builtin_huge_valf, see Section 6.46 Other built-in functions provided by GCC

__builtin_huge_vall, see Section 6.46 Other built-in functions provided by GCC

__builtin_inf, see Section 6.46 Other built-in functions provided by GCC

__builtin_inff, see Section 6.46 Other built-in functions provided by GCC

__builtin_infl, see Section 6.46 Other built-in functions provided by GCC

__builtin_isgreater, see Section 6.46 Other built-in functions provided by GCC

__builtin_isgreaterequal, see Section 6.46 Other built-in functions provided by GCC

__builtin_isless, see Section 6.46 Other built-in functions provided by GCC

__builtin_islessequal, see Section 6.46 Other built-in functions provided by GCC

__builtin_islessgreater, see Section 6.46 Other built-in functions provided by GCC

__builtin_isunordered, see Section 6.46 Other built-in functions provided by GCC

__builtin_nan, see Section 6.46 Other built-in functions provided by GCC

__builtin_nanf, see Section 6.46 Other built-in functions provided by GCC

__builtin_nanl, see Section 6.46 Other built-in functions provided by GCC

__builtin_nans, see Section 6.46 Other built-in functions provided by GCC

__builtin_nansf, see Section 6.46 Other built-in functions provided by GCC

__builtin_nansl, see Section 6.46 Other built-in functions provided by GCC

__builtin_parity, see Section 6.46 Other built-in functions provided by GCC

__builtin_parityl, see Section 6.46 Other built-in functions provided by GCC

__builtin_parityll, see Section 6.46 Other built-in functions provided by GCC

__builtin_popcount, see Section 6.46 Other built-in functions provided by GCC

__builtin_popcountl, see Section 6.46 Other built-in functions provided by GCC

__builtin_popcountll, see Section 6.46 Other built-in functions provided by GCC

__builtin_prefetch, see Section 6.46 Other built-in functions provided by GCC

__builtin_return, see Section 6.5 Constructing Function Calls

__builtin_return_address, see Section 6.44 Getting the Return or Frame Address of a Function

__builtin_types_compatible_p, see Section 6.46 Other built-in functions provided by GCC

__complex__ keyword, see Section 6.10 Complex Numbers

__extension__, see Section 6.41 Alternate Keywords

__func__ identifier, see Section 6.43 Function Names as Strings

__FUNCTION__ identifier, see Section 6.43 Function Names as Strings

__imag__ keyword, see Section 6.10 Complex Numbers

__PRETTY_FUNCTION__ identifier, see Section 6.43 Function Names as Strings

__real__ keyword, see Section 6.10 Complex Numbers

__STDC_HOSTED__, see Chapter 3 Language Standards Supported by GCC

__thread, see Section 6.50 Thread-Local Storage

_Complex keyword, see Section 6.10 Complex Numbers

_Exit, see Section 6.46 Other built-in functions provided by GCC

_exit, see Section 6.46 Other built-in functions provided by GCC

A

ABI, see Chapter 9 Binary Compatibility

abort, see Section 6.46 Other built-in functions provided by GCC

abs, see Section 6.46 Other built-in functions provided by GCC

accessing volatiles, see Section 7.2 When is a Volatile Object Accessed?

Ada, see Chapter 2 Compile C, C++, Objective-C, Ada, Fortran, Java, or treelang

address constraints, see Section 6.38.1 Simple Constraints

address of a label, see Section 6.3 Labels as Values

address_operand, see Section 6.38.1 Simple Constraints

alias attribute, see Section 6.26 Declaring Attributes of Functions

aliasing of parameters, see Section 4.18 Options for Code Generation Conventions

aligned attribute, see Section 6.33 Specifying Attributes of Variables

aligned attribute, see Section 6.34 Specifying Attributes of Types

alignment, see Section 6.32 Inquiring on Alignment of Types or Variables

alloca, see Section 6.46 Other built-in functions provided by GCC

alloca vs variable-length arrays, see Section 6.14 Arrays of Variable Length

alternate keywords, see Section 6.41 Alternate Keywords

always_inline function attribute, see Section 6.26 Declaring Attributes of Functions

AMD x86-64 Options, see Section 4.17.3 Intel 386 and AMD x86-64 Options

AMD1, see Chapter 3 Language Standards Supported by GCC

ANSI C, see Chapter 3 Language Standards Supported by GCC

ANSI C standard, see Chapter 3 Language Standards Supported by GCC

ANSI C89, see Chapter 3 Language Standards Supported by GCC

ANSI support, see Section 4.4 Options Controlling C Dialect

ANSI X3.159-1989, see Chapter 3 Language Standards Supported by GCC

apostrophes, see Section 11.5 Incompatibilities of GCC

application binary interface, see Chapter 9 Binary Compatibility

ARM [Annotated C++ Reference Manual], see Section 7.11 Backwards Compatibility

arrays of length zero, see Section 6.12 Arrays of Length Zero

arrays of variable length, see Section 6.14 Arrays of Variable Length

arrays, non-lvalue, see Section 6.18 Non-Lvalue Arrays May Have Subscripts

asm constraints, see Section 6.38 Constraints for asmOperands

asm expressions, see Section 6.37 Assembler Instructions with C Expression Operands

assembler instructions, see Section 6.37 Assembler Instructions with C Expression Operands

assembler names for identifiers, see Section 6.39 Controlling Names Used in Assembler Code

assembly code, invalid, see Section 12.1 Have You Found a Bug?

atan, see Section 6.46 Other built-in functions provided by GCC

atan2, see Section 6.46 Other built-in functions provided by GCC

atan2f, see Section 6.46 Other built-in functions provided by GCC

atan2l, see Section 6.46 Other built-in functions provided by GCC

atanf, see Section 6.46 Other built-in functions provided by GCC

atanl, see Section 6.46 Other built-in functions provided by GCC

attribute of types, see Section 6.34 Specifying Attributes of Types

attribute of variables, see Section 6.33 Specifying Attributes of Variables

attribute syntax, see Section 6.27 Attribute Syntax

autoincrement/decrement addressing, see Section 6.38.1 Simple Constraints

automatic inline for C++ member fns, see Section 6.36 An Inline Function is As Fast As a Macro

B

Backwards Compatibility, see Section 7.11 Backwards Compatibility

base class members, see Section 11.9.2 Name lookup, templates, and accessing members of base classes

bcmp, see Section 6.46 Other built-in functions provided by GCC

binary compatibility, see Chapter 9 Binary Compatibility

bound pointer to member function, see Section 7.7 Extracting the function pointer from a bound pointer to member function

bug criteria, see Section 12.1 Have You Found a Bug?

bugs, see Chapter 12 Reporting Bugs

bugs, known, see Chapter 11 Known Causes of Trouble with GCC

built-in functions, see Section 4.4 Options Controlling C Dialect

built-in functions, see Section 6.46 Other built-in functions provided by GCC

bzero, see Section 6.46 Other built-in functions provided by GCC

C

C compilation options, see Chapter 4 GCC Command Options

C intermediate output, nonexistent, see Chapter 2 Compile C, C++, Objective-C, Ada, Fortran, Java, or treelang

C language extensions, see Chapter 6 Extensions to the C Language Family

C language, traditional, see Section 4.4 Options Controlling C Dialect

C standard, see Chapter 3 Language Standards Supported by GCC

C standards, see Chapter 3 Language Standards Supported by GCC

C++, see Chapter 2 Compile C, C++, Objective-C, Ada, Fortran, Java, or treelang

c++, see Section 4.3 Compiling C++ Programs

C++ comments, see Section 6.29 C++ Style Comments

C++ compilation options, see Chapter 4 GCC Command Options

C++ interface and implementation headers, see Section 7.5 Declarations and Definitions in One Header

C++ language extensions, see Chapter 7 Extensions to the C++ Language

C++ member fns, automatically inline, see Section 6.36 An Inline Function is As Fast As a Macro

C++ misunderstandings, see Section 11.9 Common Misunderstandings with GNU C++

C++ options, command line, see Section 4.5 Options Controlling C++ Dialect

C++ pragmas, effect on inlining, see Section 7.5 Declarations and Definitions in One Header

C++ source file suffixes, see Section 4.3 Compiling C++ Programs

C++ static data, declaring and defining, see Section 11.9.1 Declare andDefine Static Members

C89, see Chapter 3 Language Standards Supported by GCC

C90, see Chapter 3 Language Standards Supported by GCC

C94, see Chapter 3 Language Standards Supported by GCC

C95, see Chapter 3 Language Standards Supported by GCC

C99, see Chapter 3 Language Standards Supported by GCC

C9X, see Chapter 3 Language Standards Supported by GCC

cabs, see Section 6.46 Other built-in functions provided by GCC

cabsf, see Section 6.46 Other built-in functions provided by GCC

cabsl, see Section 6.46 Other built-in functions provided by GCC

calloc, see Section 6.46 Other built-in functions provided by GCC

case labels in initializers, see Section 6.22 Designated Initializers

case ranges, see Section 6.23 Case Ranges

cast to a union, see Section 6.24 Cast to a Union Type

casts as lvalues, see Section 6.7 Generalized Lvalues

ceil, see Section 6.46 Other built-in functions provided by GCC

ceilf, see Section 6.46 Other built-in functions provided by GCC

ceill, see Section 6.46 Other built-in functions provided by GCC

cimag, see Section 6.46 Other built-in functions provided by GCC

cimagf, see Section 6.46 Other built-in functions provided by GCC

cimagl, see Section 6.46 Other built-in functions provided by GCC

cleanup attribute, see Section 6.33 Specifying Attributes of Variables

code generation conventions, see Section 4.18 Options for Code Generation Conventions

code, mixed with declarations, see Section 6.25 Mixed Declarations and Code

command options, see Chapter 4 GCC Command Options

comments, C++ style, see Section 6.29 C++ Style Comments

common attribute, see Section 6.33 Specifying Attributes of Variables

comparison of signed and unsigned values, warning, see Section 4.8 Options to Request or Suppress Warnings

compiler bugs, reporting, see Section 12.2 How and where to Report Bugs

compiler compared to C++ preprocessor, see Chapter 2 Compile C, C++, Objective-C, Ada, Fortran, Java, or treelang

compiler options, C++, see Section 4.5 Options Controlling C++ Dialect

compiler options, Objective-C, see Section 4.6 Options Controlling Objective-C Dialect

compiler version, specifying, see Section 4.16 Specifying Target Machine and Compiler Version

COMPILER_PATH, see Section 4.19 Environment Variables Affecting GCC

complex conjugation, see Section 6.10 Complex Numbers

complex numbers, see Section 6.10 Complex Numbers

compound expressions as lvalues, see Section 6.7 Generalized Lvalues

compound literals, see Section 6.21 Compound Literals

computed gotos, see Section 6.3 Labels as Values

conditional expressions as lvalues, see Section 6.7 Generalized Lvalues

conditional expressions, extensions, see Section 6.8 Conditionals with Omitted Operands

conflicting types, see Section 11.8 Disappointments and Misunderstandings

conj, see Section 6.46 Other built-in functions provided by GCC

conjf, see Section 6.46 Other built-in functions provided by GCC

conjl, see Section 6.46 Other built-in functions provided by GCC

const applied to function, see Section 6.26 Declaring Attributes of Functions

const function attribute, see Section 6.26 Declaring Attributes of Functions

constants in constraints, see Section 6.38.1 Simple Constraints

constraint modifier characters, see Section 6.38.3 Constraint Modifier Characters

constraint, matching, see Section 6.38.1 Simple Constraints

constraints, asm, see Section 6.38 Constraints for asmOperands

constraints, machine specific, see Section 6.38.4 Constraints for Particular Machines

constructing calls, see Section 6.5 Constructing Function Calls

constructor expressions, see Section 6.21 Compound Literals

constructor function attribute, see Section 6.26 Declaring Attributes of Functions

contributors, see Chapter 19 Contributors to GCC

core dump, see Section 12.1 Have You Found a Bug?

cos, see Section 6.46 Other built-in functions provided by GCC

cosf, see Section 6.46 Other built-in functions provided by GCC

cosl, see Section 6.46 Other built-in functions provided by GCC

creal, see Section 6.46 Other built-in functions provided by GCC

crealf, see Section 6.46 Other built-in functions provided by GCC

creall, see Section 6.46 Other built-in functions provided by GCC

cross compiling, see Section 4.16 Specifying Target Machine and Compiler Version

D

DBX, see Section 11.3 Interoperation

deallocating variable length arrays, see Section 6.14 Arrays of Variable Length

debugging information options, see Section 4.9 Options for Debugging Your Program or GCC

declaration scope, see Section 11.5 Incompatibilities of GCC

declarations inside expressions, see Section 6.1 Statements and Declarations in Expressions

declarations, mixed with code, see Section 6.25 Mixed Declarations and Code

declaring attributes of functions, see Section 6.26 Declaring Attributes of Functions

declaring static data in C++, see Section 11.9.1 Declare andDefine Static Members

defining static data in C++, see Section 11.9.1 Declare andDefine Static Members

dependencies for make as output, see Section 4.19 Environment Variables Affecting GCC

dependencies, make, see Section 4.11 Options Controlling the Preprocessor

dependent name lookup, see Section 11.9.2 Name lookup, templates, and accessing members of base classes

deprecated attribute, see Section 6.33 Specifying Attributes of Variables

deprecated attribute., see Section 6.26 Declaring Attributes of Functions

designated initializers, see Section 6.22 Designated Initializers

designator lists, see Section 6.22 Designated Initializers

designators, see Section 6.22 Designated Initializers

destructor function attribute, see Section 6.26 Declaring Attributes of Functions

diagnostic messages, see Section 4.7 Options to Control Diagnostic Messages Formatting

dialect options, see Section 4.4 Options Controlling C Dialect

digits in constraint, see Section 6.38.1 Simple Constraints

directory options, see Section 4.14 Options for Directory Search

dollar signs in identifier names, see Section 6.30 Dollar Signs in Identifier Names

double-word arithmetic, see Section 6.9 Double-Word Integers

downward funargs, see Section 6.4 Nested Functions

E in constraint, see Section 6.38.1 Simple Constraints

E

earlyclobber operand, see Section 6.38.3 Constraint Modifier Characters

empty structures, see Section 6.13 Structures With No Members

environment variables, see Section 4.19 Environment Variables Affecting GCC

error messages, see Section 11.12 Warning Messages and Error Messages

escaped newlines, see Section 6.16 Slightly Looser Rules for Escaped Newlines

exclamation point, see Section 6.38.2 Multiple Alternative Constraints

exit, see Section 6.46 Other built-in functions provided by GCC

exp, see Section 6.46 Other built-in functions provided by GCC

expf, see Section 6.46 Other built-in functions provided by GCC

expl, see Section 6.46 Other built-in functions provided by GCC

explicit register variables, see Section 6.40 Variables in Specified Registers

expressions containing statements, see Section 6.1 Statements and Declarations in Expressions

expressions, compound, as lvalues, see Section 6.7 Generalized Lvalues

expressions, conditional, as lvalues, see Section 6.7 Generalized Lvalues

expressions, constructor, see Section 6.21 Compound Literals

extended asm, see Section 6.37 Assembler Instructions with C Expression Operands

extensible constraints, see Section 6.38.1 Simple Constraints

extensions, ?:, see Section 6.8 Conditionals with Omitted Operands

extensions, ?:, see Section 6.7 Generalized Lvalues

extensions, C language, see Chapter 6 Extensions to the C Language Family

extensions, C++ language, see Chapter 7 Extensions to the C++ Language

external declaration scope, see Section 11.5 Incompatibilities of GCC

F in constraint, see Section 6.38.1 Simple Constraints

F

fabs, see Section 6.46 Other built-in functions provided by GCC

fabsf, see Section 6.46 Other built-in functions provided by GCC

fabsl, see Section 6.46 Other built-in functions provided by GCC

fatal signal, see Section 12.1 Have You Found a Bug?

FDL, GNU Free Documentation License, see Chapter 18 GNU Free Documentation License

ffs, see Section 6.46 Other built-in functions provided by GCC

file name suffix, see Section 4.2 Options Controlling the Kind of Output

file names, see Section 4.13 Options for Linking

flexible array members, see Section 6.12 Arrays of Length Zero

float as function value type, see Section 11.5 Incompatibilities of GCC

floating point precision, see Section 11.8 Disappointments and Misunderstandings

floating point precision, see Section 4.10 Options That Control Optimization

floor, see Section 6.46 Other built-in functions provided by GCC

floorf, see Section 6.46 Other built-in functions provided by GCC

floorl, see Section 6.46 Other built-in functions provided by GCC

fmod, see Section 6.46 Other built-in functions provided by GCC

fmodf, see Section 6.46 Other built-in functions provided by GCC

fmodl, see Section 6.46 Other built-in functions provided by GCC

format function attribute, see Section 6.26 Declaring Attributes of Functions

format_arg function attribute, see Section 6.26 Declaring Attributes of Functions

Fortran, see Chapter 2 Compile C, C++, Objective-C, Ada, Fortran, Java, or treelang

forwarding calls, see Section 6.5 Constructing Function Calls

fprintf, see Section 6.46 Other built-in functions provided by GCC

fprintf_unlocked, see Section 6.46 Other built-in functions provided by GCC

fputs, see Section 6.46 Other built-in functions provided by GCC

fputs_unlocked, see Section 6.46 Other built-in functions provided by GCC

freestanding environment, see Chapter 3 Language Standards Supported by GCC

freestanding implementation, see Chapter 3 Language Standards Supported by GCC

fscanf, and constant strings, see Section 11.5 Incompatibilities of GCC

function attributes, see Section 6.26 Declaring Attributes of Functions

function pointers, arithmetic, see Section 6.19 Arithmetic on void- and Function-Pointers

function prototype declarations, see Section 6.28 Prototypes and Old-Style Function Definitions

function without a prologue/epilogue code, see Section 6.26 Declaring Attributes of Functions

function, size of pointer to, see Section 6.19 Arithmetic on void- and Function-Pointers

functions called via pointer on the RS/6000 and PowerPC, see Section 6.26 Declaring Attributes of Functions

functions in arbitrary sections, see Section 6.26 Declaring Attributes of Functions

functions that are passed arguments in registers on the 386, see Section 6.26 Declaring Attributes of Functions

functions that behave like malloc, see Section 6.26 Declaring Attributes of Functions

functions that do not pop the argument stack on the 386, see Section 6.26 Declaring Attributes of Functions

functions that do pop the argument stack on the 386, see Section 6.26 Declaring Attributes of Functions

functions that have no side effects, see Section 6.26 Declaring Attributes of Functions

functions that never return, see Section 6.26 Declaring Attributes of Functions

functions that pop the argument stack on the 386, see Section 6.26 Declaring Attributes of Functions

functions which do not handle memory bank switching on 68HC11/68HC12, see Section 6.26 Declaring Attributes of Functions

functions which handle memory bank switching, see Section 6.26 Declaring Attributes of Functions

functions with non-null pointer arguments, see Section 6.26 Declaring Attributes of Functions

functions with printf, scanf, strftime or strfmon style arguments, see Section 6.26 Declaring Attributes of Functions

g in constraint, see Section 6.38.1 Simple Constraints

G in constraint, see Section 6.38.1 Simple Constraints

G

G++, see Chapter 2 Compile C, C++, Objective-C, Ada, Fortran, Java, or treelang

g++, see Section 4.3 Compiling C++ Programs

GCC, see Chapter 2 Compile C, C++, Objective-C, Ada, Fortran, Java, or treelang

GCC command options, see Chapter 4 GCC Command Options

GCC_EXEC_PREFIX, see Section 4.19 Environment Variables Affecting GCC

gcc_struct, see Section 6.34 Specifying Attributes of Types

gcc_struct attribute, see Section 6.33 Specifying Attributes of Variables

generalized lvalues, see Section 6.7 Generalized Lvalues

global offset table, see Section 4.18 Options for Code Generation Conventions

global register after longjmp, see Section 6.40.1 Defining Global Register Variables

global register variables, see Section 6.40.1 Defining Global Register Variables

GNAT, see Chapter 2 Compile C, C++, Objective-C, Ada, Fortran, Java, or treelang

goto with computed label, see Section 6.3 Labels as Values

gprof, see Section 4.9 Options for Debugging Your Program or GCC

grouping options, see Chapter 4 GCC Command Options

H in constraint, see Section 6.38.1 Simple Constraints

H

hardware models and configurations, specifying, see Section 4.17 Hardware Models and Configurations

hex floats, see Section 6.11 Hex Floats

hosted environment, see Chapter 3 Language Standards Supported by GCC

hosted environment, see Section 4.4 Options Controlling C Dialect

hosted implementation, see Chapter 3 Language Standards Supported by GCC

I in constraint, see Section 6.38.1 Simple Constraints

i in constraint, see Section 6.38.1 Simple Constraints

I

i386 Options, see Section 4.17.3 Intel 386 and AMD x86-64 Options

IA-64 Options, see Section 4.17.4 IA-64 Options

IBM RS/6000 and PowerPC Options, see Section 4.17.2 IBM RS/6000 and PowerPC Options

identifier names, dollar signs in, see Section 6.30 Dollar Signs in Identifier Names

identifiers, names in assembler code, see Section 6.39 Controlling Names Used in Assembler Code

imaxabs, see Section 6.46 Other built-in functions provided by GCC

implementation-defined behavior, C language, see Chapter 5 C Implementation-defined behavior

implied #pragma implementation, see Section 7.5 Declarations and Definitions in One Header

incompatibilities of GCC, see Section 11.5 Incompatibilities of GCC

increment operators, see Section 12.1 Have You Found a Bug?

index, see Section 6.46 Other built-in functions provided by GCC

init_priority attribute, see Section 7.8 C++-Specific Variable, Function, and Type Attributes

initializations in expressions, see Section 6.21 Compound Literals

initializers with labeled elements, see Section 6.22 Designated Initializers

initializers, non-constant, see Section 6.20 Non-Constant Initializers

inline automatic for C++ member fns, see Section 6.36 An Inline Function is As Fast As a Macro

inline functions, see Section 6.36 An Inline Function is As Fast As a Macro

inline functions, omission of, see Section 6.36 An Inline Function is As Fast As a Macro

inlining and C++ pragmas, see Section 7.5 Declarations and Definitions in One Header

installation trouble, see Chapter 11 Known Causes of Trouble with GCC

integrating function code, see Section 6.36 An Inline Function is As Fast As a Macro

Intel 386 Options, see Section 4.17.3 Intel 386 and AMD x86-64 Options

interface and implementation headers, C++, see Section 7.5 Declarations and Definitions in One Header

intermediate C version, nonexistent, see Chapter 2 Compile C, C++, Objective-C, Ada, Fortran, Java, or treelang

interrupt handler functions, see Section 6.26 Declaring Attributes of Functions

introduction, see Chapter 1 Introduction

invalid assembly code, see Section 12.1 Have You Found a Bug?

invalid input, see Section 12.1 Have You Found a Bug?

invoking g++, see Section 4.3 Compiling C++ Programs

ISO 9899, see Chapter 3 Language Standards Supported by GCC

ISO C, see Chapter 3 Language Standards Supported by GCC

ISO C standard, see Chapter 3 Language Standards Supported by GCC

ISO C90, see Chapter 3 Language Standards Supported by GCC

ISO C94, see Chapter 3 Language Standards Supported by GCC

ISO C95, see Chapter 3 Language Standards Supported by GCC

ISO C99, see Chapter 3 Language Standards Supported by GCC

ISO C9X, see Chapter 3 Language Standards Supported by GCC

ISO support, see Section 4.4 Options Controlling C Dialect

ISO/IEC 9899, see Chapter 3 Language Standards Supported by GCC

J

Java, see Chapter 2 Compile C, C++, Objective-C, Ada, Fortran, Java, or treelang

java_interface attribute, see Section 7.8 C++-Specific Variable, Function, and Type Attributes

K

keywords, alternate, see Section 6.41 Alternate Keywords

known causes of trouble, see Chapter 11 Known Causes of Trouble with GCC

L

labeled elements in initializers, see Section 6.22 Designated Initializers

labels as values, see Section 6.3 Labels as Values

labs, see Section 6.46 Other built-in functions provided by GCC

LANG, see Section 4.19 Environment Variables Affecting GCC

language dialect options, see Section 4.4 Options Controlling C Dialect

LC_ALL, see Section 4.19 Environment Variables Affecting GCC

LC_CTYPE, see Section 4.19 Environment Variables Affecting GCC

LC_MESSAGES, see Section 4.19 Environment Variables Affecting GCC

length-zero arrays, see Section 6.12 Arrays of Length Zero

Libraries, see Section 4.13 Options for Linking

LIBRARY_PATH, see Section 4.19 Environment Variables Affecting GCC

link options, see Section 4.13 Options for Linking

LL integer suffix, see Section 6.9 Double-Word Integers

llabs, see Section 6.46 Other built-in functions provided by GCC

load address instruction, see Section 6.38.1 Simple Constraints

local labels, see Section 6.2 Locally Declared Labels

local variables in macros, see Section 6.6 Referring to a Type with typeof

local variables, specifying registers, see Section 6.40.2 Specifying Registers for Local Variables

locale, see Section 4.19 Environment Variables Affecting GCC

locale definition, see Section 4.19 Environment Variables Affecting GCC

log, see Section 6.46 Other built-in functions provided by GCC

logf, see Section 6.46 Other built-in functions provided by GCC

logl, see Section 6.46 Other built-in functions provided by GCC

long long data types, see Section 6.9 Double-Word Integers

longjmp, see Section 6.40.1 Defining Global Register Variables

longjmp incompatibilities, see Section 11.5 Incompatibilities of GCC

longjmp warnings, see Section 4.8 Options to Request or Suppress Warnings

lvalues, generalized, see Section 6.7 Generalized Lvalues

m in constraint, see Section 6.38.1 Simple Constraints

M

machine dependent options, see Section 4.17 Hardware Models and Configurations

machine specific constraints, see Section 6.38.4 Constraints for Particular Machines

macro with variable arguments, see Section 6.15 Macros with a Variable Number of Arguments.

macros containing asm, see Section 6.37 Assembler Instructions with C Expression Operands

macros, inline alternative, see Section 6.36 An Inline Function is As Fast As a Macro

macros, local labels, see Section 6.2 Locally Declared Labels

macros, local variables in, see Section 6.6 Referring to a Type with typeof

macros, statements in expressions, see Section 6.1 Statements and Declarations in Expressions

macros, types of arguments, see Section 6.6 Referring to a Type with typeof

make, see Section 4.11 Options Controlling the Preprocessor

malloc, see Section 6.46 Other built-in functions provided by GCC

malloc attribute, see Section 6.26 Declaring Attributes of Functions

matching constraint, see Section 6.38.1 Simple Constraints

maximum operator, see Section 7.1 Minimum and Maximum Operators in C++

member fns, automatically inline, see Section 6.36 An Inline Function is As Fast As a Macro

memcmp, see Section 6.46 Other built-in functions provided by GCC

memcpy, see Section 6.46 Other built-in functions provided by GCC

memory references in constraints, see Section 6.38.1 Simple Constraints

mempcpy, see Section 6.46 Other built-in functions provided by GCC

memset, see Section 6.46 Other built-in functions provided by GCC

message formatting, see Section 4.7 Options to Control Diagnostic Messages Formatting

messages, warning, see Section 4.8 Options to Request or Suppress Warnings

messages, warning and error, see Section 11.12 Warning Messages and Error Messages

middle-operands, omitted, see Section 6.8 Conditionals with Omitted Operands

minimum operator, see Section 7.1 Minimum and Maximum Operators in C++

misunderstandings in C++, see Section 11.9 Common Misunderstandings with GNU C++

mixed declarations and code, see Section 6.25 Mixed Declarations and Code

mktemp, and constant strings, see Section 11.5 Incompatibilities of GCC

mode attribute, see Section 6.33 Specifying Attributes of Variables

modifiers in constraints, see Section 6.38.3 Constraint Modifier Characters

ms_struct, see Section 6.34 Specifying Attributes of Types

ms_struct attribute, see Section 6.33 Specifying Attributes of Variables

multi-line string literals, see Section 6.17 String Literals with Embedded Newlines

multiple alternative constraints, see Section 6.38.2 Multiple Alternative Constraints

multiprecision arithmetic, see Section 6.9 Double-Word Integers

n in constraint, see Section 6.38.1 Simple Constraints

N

names used in assembler code, see Section 6.39 Controlling Names Used in Assembler Code

naming convention, implementation headers, see Section 7.5 Declarations and Definitions in One Header

nearbyint, see Section 6.46 Other built-in functions provided by GCC

nearbyintf, see Section 6.46 Other built-in functions provided by GCC

nearbyintl, see Section 6.46 Other built-in functions provided by GCC

nested functions, see Section 6.4 Nested Functions

newlines (escaped), see Section 6.16 Slightly Looser Rules for Escaped Newlines

no_instrument_function function attribute, see Section 6.26 Declaring Attributes of Functions

nocommon attribute, see Section 6.33 Specifying Attributes of Variables

noinline function attribute, see Section 6.26 Declaring Attributes of Functions

non-constant initializers, see Section 6.20 Non-Constant Initializers

non-static inline function, see Section 6.36 An Inline Function is As Fast As a Macro

nonnull function attribute, see Section 6.26 Declaring Attributes of Functions

noreturn function attribute, see Section 6.26 Declaring Attributes of Functions

nothrow function attribute, see Section 6.26 Declaring Attributes of Functions

o in constraint, see Section 6.38.1 Simple Constraints

O

Objective-C, see Chapter 2 Compile C, C++, Objective-C, Ada, Fortran, Java, or treelang

Objective-C options, command line, see Section 4.6 Options Controlling Objective-C Dialect

offsettable address, see Section 6.38.1 Simple Constraints

old-style function definitions, see Section 6.28 Prototypes and Old-Style Function Definitions

omitted middle-operands, see Section 6.8 Conditionals with Omitted Operands

open coding, see Section 6.36 An Inline Function is As Fast As a Macro

operand constraints, asm, see Section 6.38 Constraints for asmOperands

optimize options, see Section 4.10 Options That Control Optimization

options to control diagnostics formatting, see Section 4.7 Options to Control Diagnostic Messages Formatting

options to control warnings, see Section 4.8 Options to Request or Suppress Warnings

options, C++, see Section 4.5 Options Controlling C++ Dialect

options, code generation, see Section 4.18 Options for Code Generation Conventions

options, debugging, see Section 4.9 Options for Debugging Your Program or GCC

options, dialect, see Section 4.4 Options Controlling C Dialect

options, directory search, see Section 4.14 Options for Directory Search

options, GCC command, see Chapter 4 GCC Command Options

options, grouping, see Chapter 4 GCC Command Options

options, linking, see Section 4.13 Options for Linking

options, Objective-C, see Section 4.6 Options Controlling Objective-C Dialect

options, optimization, see Section 4.10 Options That Control Optimization

options, order, see Chapter 4 GCC Command Options

options, preprocessor, see Section 4.11 Options Controlling the Preprocessor

order of evaluation, side effects, see Section 11.11 Certain Changes We Don't Want to Make

order of options, see Chapter 4 GCC Command Options

other register constraints, see Section 6.38.1 Simple Constraints

output file option, see Section 4.2 Options Controlling the Kind of Output

overloaded virtual fn, warning, see Section 4.5 Options Controlling C++ Dialect

p in constraint, see Section 6.38.1 Simple Constraints

packed attribute, see Section 6.33 Specifying Attributes of Variables

P

parameter forward declaration, see Section 6.14 Arrays of Variable Length

parameters, aliased, see Section 4.18 Options for Code Generation Conventions

PIC, see Section 4.18 Options for Code Generation Conventions

pmf, see Section 7.7 Extracting the function pointer from a bound pointer to member function

pointer arguments, see Section 6.26 Declaring Attributes of Functions

pointer to member function, see Section 7.7 Extracting the function pointer from a bound pointer to member function

portions of temporary objects, pointers to, see Section 11.9.3 Temporaries May Vanish Before You Expect

pow, see Section 6.46 Other built-in functions provided by GCC

powf, see Section 6.46 Other built-in functions provided by GCC

powl, see Section 6.46 Other built-in functions provided by GCC

pragma, extern_prefix, see Section 6.48.3 Tru64 Pragmas

pragma, longcall, see Section 6.48.1 RS/6000 and PowerPC Pragmas

pragma, reason for not using, see Section 6.26 Declaring Attributes of Functions

pragma, redefine_extname, see Section 6.48.2 Solaris Pragmas

pragmas, see Section 6.48 Pragmas Accepted by GCC

pragmas in C++, effect on inlining, see Section 7.5 Declarations and Definitions in One Header

pragmas, interface and implementation, see Section 7.5 Declarations and Definitions in One Header

pragmas, warning of unknown, see Section 4.8 Options to Request or Suppress Warnings

precompiled headers, see Section 4.20 Using Precompiled Headers

preprocessing numbers, see Section 11.5 Incompatibilities of GCC

preprocessing tokens, see Section 11.5 Incompatibilities of GCC

preprocessor options, see Section 4.11 Options Controlling the Preprocessor

printf, see Section 6.46 Other built-in functions provided by GCC

printf_unlocked, see Section 6.46 Other built-in functions provided by GCC

prof, see Section 4.9 Options for Debugging Your Program or GCC

promotion of formal parameters, see Section 6.28 Prototypes and Old-Style Function Definitions

pure function attribute, see Section 6.26 Declaring Attributes of Functions

push address instruction, see Section 6.38.1 Simple Constraints

putchar, see Section 6.46 Other built-in functions provided by GCC

puts, see Section 6.46 Other built-in functions provided by GCC

qsort, and global register variables, see Section 6.40.1 Defining Global Register Variables

Q

question mark, see Section 6.38.2 Multiple Alternative Constraints

r in constraint, see Section 6.38.1 Simple Constraints

R

ranges in case statements, see Section 6.23 Case Ranges

read-only strings, see Section 11.5 Incompatibilities of GCC

register variable after longjmp, see Section 6.40.1 Defining Global Register Variables

registers, see Section 6.37 Assembler Instructions with C Expression Operands

registers for local variables, see Section 6.40.2 Specifying Registers for Local Variables

registers in constraints, see Section 6.38.1 Simple Constraints

registers, global allocation, see Section 6.40 Variables in Specified Registers

registers, global variables in, see Section 6.40.1 Defining Global Register Variables

regparm attribute, see Section 6.26 Declaring Attributes of Functions

reordering, warning, see Section 4.5 Options Controlling C++ Dialect

reporting bugs, see Chapter 12 Reporting Bugs

rest argument (in macro), see Section 6.15 Macros with a Variable Number of Arguments.

restricted pointers, see Section 7.3 Restricting Pointer Aliasing

restricted references, see Section 7.3 Restricting Pointer Aliasing

restricted this pointer, see Section 7.3 Restricting Pointer Aliasing

rindex, see Section 6.46 Other built-in functions provided by GCC

round, see Section 6.46 Other built-in functions provided by GCC

roundf, see Section 6.46 Other built-in functions provided by GCC

roundl, see Section 6.46 Other built-in functions provided by GCC

RS/6000 and PowerPC Options, see Section 4.17.2 IBM RS/6000 and PowerPC Options

RTTI, see Section 7.4 Vague Linkage

run-time options, see Section 4.18 Options for Code Generation Conventions

s in constraint, see Section 6.38.1 Simple Constraints

S

S/390 and zSeries Options, see Section 4.17.5 S/390 and zSeries Options

scanf, see Section 6.46 Other built-in functions provided by GCC

scanf, and constant strings, see Section 11.5 Incompatibilities of GCC

scope of a variable length array, see Section 6.14 Arrays of Variable Length

scope of declaration, see Section 11.8 Disappointments and Misunderstandings

scope of external declarations, see Section 11.5 Incompatibilities of GCC

search path, see Section 4.14 Options for Directory Search

section function attribute, see Section 6.26 Declaring Attributes of Functions

section variable attribute, see Section 6.33 Specifying Attributes of Variables

setjmp, see Section 6.40.1 Defining Global Register Variables

setjmp incompatibilities, see Section 11.5 Incompatibilities of GCC

shared strings, see Section 11.5 Incompatibilities of GCC

shared variable attribute, see Section 6.33 Specifying Attributes of Variables

side effect in ?:, see Section 6.8 Conditionals with Omitted Operands

side effects, macro argument, see Section 6.1 Statements and Declarations in Expressions

side effects, order of evaluation, see Section 11.11 Certain Changes We Don't Want to Make

signed and unsigned values, comparison warning, see Section 4.8 Options to Request or Suppress Warnings

simple constraints, see Section 6.38.1 Simple Constraints

sin, see Section 6.46 Other built-in functions provided by GCC

sinf, see Section 6.46 Other built-in functions provided by GCC

sinl, see Section 6.46 Other built-in functions provided by GCC

sizeof, see Section 6.6 Referring to a Type with typeof

smaller data references (PowerPC), see Section 4.17.2 IBM RS/6000 and PowerPC Options

snprintf, see Section 6.46 Other built-in functions provided by GCC

Spec Files, see Section 4.15 Specifying subprocesses and the switches to pass to them

specified registers, see Section 6.40 Variables in Specified Registers

specifying compiler version and target machine, see Section 4.16 Specifying Target Machine and Compiler Version

specifying hardware config, see Section 4.17 Hardware Models and Configurations

specifying machine version, see Section 4.16 Specifying Target Machine and Compiler Version

specifying registers for local variables, see Section 6.40.2 Specifying Registers for Local Variables

speed of compilation, see Section 4.20 Using Precompiled Headers

sprintf, see Section 6.46 Other built-in functions provided by GCC

sqrt, see Section 6.46 Other built-in functions provided by GCC

sqrtf, see Section 6.46 Other built-in functions provided by GCC

sqrtl, see Section 6.46 Other built-in functions provided by GCC

sscanf, see Section 6.46 Other built-in functions provided by GCC

sscanf, and constant strings, see Section 11.5 Incompatibilities of GCC

statements inside expressions, see Section 6.1 Statements and Declarations in Expressions

static data in C++, declaring and defining, see Section 11.9.1 Declare andDefine Static Members

stpcpy, see Section 6.46 Other built-in functions provided by GCC

strcat, see Section 6.46 Other built-in functions provided by GCC

strchr, see Section 6.46 Other built-in functions provided by GCC

strcmp, see Section 6.46 Other built-in functions provided by GCC

strcpy, see Section 6.46 Other built-in functions provided by GCC

strcspn, see Section 6.46 Other built-in functions provided by GCC

strdup, see Section 6.46 Other built-in functions provided by GCC

string constants, see Section 11.5 Incompatibilities of GCC

strlen, see Section 6.46 Other built-in functions provided by GCC

strncat, see Section 6.46 Other built-in functions provided by GCC

strncmp, see Section 6.46 Other built-in functions provided by GCC

strncpy, see Section 6.46 Other built-in functions provided by GCC

strpbrk, see Section 6.46 Other built-in functions provided by GCC

strrchr, see Section 6.46 Other built-in functions provided by GCC

strspn, see Section 6.46 Other built-in functions provided by GCC

strstr, see Section 6.46 Other built-in functions provided by GCC

struct, see Section 6.49 Unnamed struct/union fields within structs/unions.

structures, see Section 11.5 Incompatibilities of GCC

structures, constructor expression, see Section 6.21 Compound Literals

submodel options, see Section 4.17 Hardware Models and Configurations

subscripting, see Section 6.18 Non-Lvalue Arrays May Have Subscripts

subscripting and function values, see Section 6.18 Non-Lvalue Arrays May Have Subscripts

suffixes for C++ source, see Section 4.3 Compiling C++ Programs

suppressing warnings, see Section 4.8 Options to Request or Suppress Warnings

surprises in C++, see Section 11.9 Common Misunderstandings with GNU C++

syntax checking, see Section 4.8 Options to Request or Suppress Warnings

synthesized methods, warning, see Section 4.5 Options Controlling C++ Dialect

system headers, warnings from, see Section 4.8 Options to Request or Suppress Warnings

T

tan, see Section 6.46 Other built-in functions provided by GCC

tanf, see Section 6.46 Other built-in functions provided by GCC

tanl, see Section 6.46 Other built-in functions provided by GCC

target machine, specifying, see Section 4.16 Specifying Target Machine and Compiler Version

target options, see Section 4.16 Specifying Target Machine and Compiler Version

TC1, see Chapter 3 Language Standards Supported by GCC

TC2, see Chapter 3 Language Standards Supported by GCC

Technical Corrigenda, see Chapter 3 Language Standards Supported by GCC

Technical Corrigendum 1, see Chapter 3 Language Standards Supported by GCC

Technical Corrigendum 2, see Chapter 3 Language Standards Supported by GCC

template instantiation, see Section 7.6 Where's the Template?

temporaries, lifetime of, see Section 11.9.3 Temporaries May Vanish Before You Expect

Thread-Local Storage, see Section 6.50 Thread-Local Storage

thunks, see Section 6.4 Nested Functions

TLS, see Section 6.50 Thread-Local Storage

tls_model attribute, see Section 6.33 Specifying Attributes of Variables

TMPDIR, see Section 4.19 Environment Variables Affecting GCC

traditional C language, see Section 4.4 Options Controlling C Dialect

treelang, see Chapter 3 Language Standards Supported by GCC

treelang, see Chapter 2 Compile C, C++, Objective-C, Ada, Fortran, Java, or treelang

trunc, see Section 6.46 Other built-in functions provided by GCC

truncf, see Section 6.46 Other built-in functions provided by GCC

truncl, see Section 6.46 Other built-in functions provided by GCC

two-stage name lookup, see Section 11.9.2 Name lookup, templates, and accessing members of base classes

type alignment, see Section 6.32 Inquiring on Alignment of Types or Variables

type attributes, see Section 6.34 Specifying Attributes of Types

type_info, see Section 7.4 Vague Linkage

typedef names as function parameters, see Section 11.5 Incompatibilities of GCC

typeof, see Section 6.6 Referring to a Type with typeof

ULL integer suffix, see Section 6.9 Double-Word Integers

U

Ultrix calling convention, see Section 11.3 Interoperation

undefined behavior, see Section 12.1 Have You Found a Bug?

undefined function value, see Section 12.1 Have You Found a Bug?

underscores in variables in macros, see Section 6.6 Referring to a Type with typeof

union, see Section 6.49 Unnamed struct/union fields within structs/unions.

union, casting to a, see Section 6.24 Cast to a Union Type

unions, see Section 11.5 Incompatibilities of GCC

unknown pragmas, warning, see Section 4.8 Options to Request or Suppress Warnings

unresolved references and -nodefaultlibs, see Section 4.13 Options for Linking

unresolved references and -nostdlib, see Section 4.13 Options for Linking

unused attribute., see Section 6.26 Declaring Attributes of Functions

used attribute., see Section 6.26 Declaring Attributes of Functions

V in constraint, see Section 6.38.1 Simple Constraints

V

vague linkage, see Section 7.4 Vague Linkage

value after longjmp, see Section 6.40.1 Defining Global Register Variables

variable alignment, see Section 6.32 Inquiring on Alignment of Types or Variables

variable attributes, see Section 6.33 Specifying Attributes of Variables

variable number of arguments, see Section 6.15 Macros with a Variable Number of Arguments.

variable-length array scope, see Section 6.14 Arrays of Variable Length

variable-length arrays, see Section 6.14 Arrays of Variable Length

variables in specified registers, see Section 6.40 Variables in Specified Registers

variables, local, in macros, see Section 6.6 Referring to a Type with typeof

variadic macros, see Section 6.15 Macros with a Variable Number of Arguments.

visibility attribute, see Section 6.26 Declaring Attributes of Functions

VLAs, see Section 6.14 Arrays of Variable Length

void pointers, arithmetic, see Section 6.19 Arithmetic on void- and Function-Pointers

void, size of pointer to, see Section 6.19 Arithmetic on void- and Function-Pointers

volatile access, see Section 7.2 When is a Volatile Object Accessed?

volatile applied to function, see Section 6.26 Declaring Attributes of Functions

volatile read, see Section 7.2 When is a Volatile Object Accessed?

volatile write, see Section 7.2 When is a Volatile Object Accessed?

vprintf, see Section 6.46 Other built-in functions provided by GCC

vscanf, see Section 6.46 Other built-in functions provided by GCC

vsnprintf, see Section 6.46 Other built-in functions provided by GCC

vsprintf, see Section 6.46 Other built-in functions provided by GCC

vsscanf, see Section 6.46 Other built-in functions provided by GCC

vtable, see Section 7.4 Vague Linkage

W

warning for comparison of signed and unsigned values, see Section 4.8 Options to Request or Suppress Warnings

warning for overloaded virtual fn, see Section 4.5 Options Controlling C++ Dialect

warning for reordering of member initializers, see Section 4.5 Options Controlling C++ Dialect

warning for synthesized methods, see Section 4.5 Options Controlling C++ Dialect

warning for unknown pragmas, see Section 4.8 Options to Request or Suppress Warnings

warning messages, see Section 4.8 Options to Request or Suppress Warnings

warnings from system headers, see Section 4.8 Options to Request or Suppress Warnings

warnings vs errors, see Section 11.12 Warning Messages and Error Messages

weak attribute, see Section 6.26 Declaring Attributes of Functions

whitespace, see Section 11.5 Incompatibilities of GCC

X in constraint, see Section 6.38.1 Simple Constraints

X

X3.159-1989, see Chapter 3 Language Standards Supported by GCC

x86-64 Options, see Section 4.17.3 Intel 386 and AMD x86-64 Options

Z

zero-length arrays, see Section 6.12 Arrays of Length Zero

zero-size structures, see Section 6.13 Structures With No Members